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Freon MO49Plus (R-437A) is an HFC retrofit refrigerant for R-12 in automotive air conditioning and stationary refrigeration systems, and for replacing HCFC-containing refrigerant blends (e.g., MP39, MP66, and R-409A) in stationary refrigeration systems. Freon MO49Plus is compatible with traditional and new lubricants; in most cases no change of lubricant during retrofit is required.
Freon MO49Plus is not recommended for use in centrifugal compressor systems or for chillers with flooded evaporators or low pressure receivers.
ASHRAE: R-437A; A1 Safety Classification.
Freon MO49Plus has an ASHRAE safety classification of A1 and is non-flammable as formulated and under leakage scenarios as specified in ASHRAE Standard 34-2007.
Replaces: Freon MO49Plus replaces R-12, HCFC-containing blends (e.g., MP39, MP66, and R-409A).
Lubricant Recommendation: In automotive air-conditioning and stationary refrigeration systems, Freon MO49Plus is compatible with traditional and new lubricants. In most cases, no change of lubricant type during retrofit is needed.